Final answer:
The Winter's Doctrine decision of 1908 resulted in increased mining regulations.
Step-by-step explanation:
The Winter's Doctrine decision of 1908 led to an outgrowth of increased mining regulations. This decision, made by the United States Supreme Court, established that water rights could not be acquired by mining companies simply by diverting water sources. Instead, companies would need to obtain proper permits and follow regulations to use water for mining purposes.